Magnetotelluric impedances of marine measurements conducted during Maria S. Merian cruise MSM17/1 and MSM17/2 in 2011, Walvis Ridge, Namibian Margin

The magnetotelluric impedance tensor elements and errors were calculated with the software BIRRP (Chave &Thomson, 2004; doi:10.1111/j.1365-246X.2004.02203.x). Magnetotelluric measurements were conducted from December 2010 to January 2011 at the Walvis Ridge, offshore Namibia. Coordinates of the MT stations are included in the EDI files and cover an area at ~8°E - 12°E, ~18°S-22°S. Station deployment and recovery was conducted on the two cruises MSM17/1 and MSM17/2 on German research vessel Maria S. Merian as part of the SPP1375 priority program SAMPLE. The SAMPLE project focused on the processes linked to continental margin formation.

研究团队借助BIRRP软件（Chave与Thomson，2004；DOI:10.1111/j.1365-246X.2004.02203.x）计算得到大地电磁阻抗张量（magnetotelluric impedance tensor）的各分量及其误差。本次大地电磁观测工作于2010年12月至2011年1月在纳米比亚近海的沃尔维斯海岭（Walvis Ridge）开展，大地电磁台站的坐标信息收录于EDI文件中，观测覆盖区域大致为东经约8°至12°、南纬约18°至22°。台站的布设与回收作业由德国“玛丽亚·S·梅里安号”（Maria S. Merian）科考船的两次航次MSM17/1与MSM17/2完成，该工作属于SPP1375优先计划“SAMPLE”的研究内容。SAMPLE项目聚焦于与大陆边缘形成相关的地质过程。